What does 1 Samuel 17:58 mean?

Saul asked him, 'Whose son are you, young man?' David answered, 'I'm the son of your servant Jesse, from Bethlehem.' 1 Samuel 17:58 - Modern Text Bible

(David introduces himself as Jesse's son, making it clear he's from a humble family in Bethlehem. This sets up his story as someone ordinary who did something extraordinary.)